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Science Unit Sept. 1
Unit 1 vocab
| Question | Answer |
|---|---|
| A living thing | organisms |
| the basic unit of structure and function in living things | cell |
| a type of organism that is made up of a single cell | unicellular |
| a type of oraganism that is made up of many cells | multicellular |
| the process of cahnge that occurs during an oraganisms life to produce a more complex organism | development |
| a change in an organism's surroundings that causes the organism to react | stimulus |
| in action of change in behavior that occurs as a result of a stimulus | response |
| the production of offspring that are similar to the parents | reproduce |
| the mistaken idea that living things arise from nonliving sources | spontaneous generation |
| an experiment in which all of the variables except for one remian the same | controlled environment |
| the one factor that a scientist changes to test a hypothisis during an experiment; also called the indenpendent variable | manipulated variable |
| an organism that makes its own food | autotrophs |
| an organism that cannot make his own food | heterotrophs |
| the process by which an organisms internal environment is kept stable in spite of changes in the external environment | homeostasis |
| an instrument that makes small objects look larger | microscope |
| a light microscope that has more than one lense | compund microscope |
| a widley accepted explanation of the relationship between cells and living things | cell theory |
| the ability to make things look larger than they are | magnification |
| the ability to clearly distinguish the individual parts of an object | resolution |
| a rigid layer of non living material that surrounds the cells of plants and some other organisms | cell wall |
| the outside boundary of a cell; controls which substance can enter or leave the cell | cell membrane |
| the control center of a cell that directs the cells activities; contains the chemical instructions that direct all the cells activities an determine the cells charactercitis | nucelus |
| material in cell that contains DNA and caries gentic information | chromatin |
| the region of a cell located inside the cell membrane or between the cell membrane or between the cell membrane and nucelus; contains a gel-like material and cell organalles | cytoplasm |
| rod-shaped cell structure that produce most of the energy headed to carry out the cells functions | mitochondria |
| a cell structure that forms a maze of passageways in which proteins and other materials are carried from one part of the cell to another | endoplasmic reticulum (ER) |
| a tiny structure in the cytoplasm of the cell were proteins are made | ribosomes |
| a structure in a cell that receives proteins and other newly formed materials from the endoplasmic reticulum (ER), packages them, and distributes them to other parts of the cell | golgi bodies |
| a structure in the cells of plants a some other organisms that capture energy from sunlight and uses it to produce food | chloroplasts |
| a water-filled sac inside a cell that acts like a storage area | vacuole |
| a small round cell structure that contains chemiclas that breakdown large food particals into smaller ones | lysosomes |
| an organism whose cells lack a nucleus an some other cell structures | prokaryotes |
| an organism wiht cells that contain nuclei and other cell structure | eukaryotes |
| the preserve remains or traces of an organism that lived in the past | fossil |
Created by:
vicky30
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